Solid–Electrolyte Interphase at Positive Electrodes in High‐Energy Li‐Ion Batteries: Current Understanding and Analytical Tools,Batteries & Supercaps

当前位置： X-MOL 学术 › Batteries Supercaps › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Solid–Electrolyte Interphase at Positive Electrodes in High‐Energy Li‐Ion Batteries: Current Understanding and Analytical Tools
Batteries & Supercaps ( IF 5.1 ) Pub Date : 2020-03-09 , DOI: 10.1002/batt.201900177
Giorgia Zampardi _{1,

2} , Fabio La Mantia ₁

Affiliation

Abstract : The operating potentials of the Li‐ion batteries active materials usually exceed the stability window of the electrolyte, leading to its irreversible reduction or oxidation. Often, as an effect of these side reactions, a surface layer is deposited onto the electrodes’ materials. These surface layers play a pivotal role on the battery performance, rate capability, irreversible charge losses, and safety. Despite their importance, such interphases are difficult to analyse because of their small thickness and sensitive chemical composition. With this review, the authors intend to describe the already established analytical tools for the analysis of the interphase layers formed at the electrodes’ surface in Li‐ion batteries, together with the novel, unconventional ones under current development, focusing on the strengths and weak points of each technique. Particular attention will be given to the surface layers formed onto the positive electrodes through a summary of their current understanding. This is of main importance since understanding the interphase at the positive electrode side could enable the next generation of high energy Li‐ion batteries.

中文翻译：

高能锂离子电池正极中的固体电解质相间：电流理解和分析工具

摘要：锂离子电池活性材料的工作电势通常超过电解质的稳定性窗口，导致其不可逆的还原或氧化。通常，由于这些副反应的影响，表面层会沉积在电极材料上。这些表面层在电池性能，速率能力，不可逆电荷损失和安全性方面起着关键作用。尽管它们很重要，但由于它们的厚度小且化学成分敏感，因此难以分析。通过这次审查，作者打算描述已经建立的用于分析锂离子电池电极表面形成的相间层的分析工具，以及目前正在开发的新颖，非常规的分析工具，专注于每种技术的优势和劣势。通过对它们的当前理解的总结，将特别关注形成在正极上的表面层。这一点非常重要，因为了解正极侧的相间可以使下一代高能锂离子电池成为可能。

更新日期：2020-03-09

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文